CN105471028B - A kind of charging unit and charging method for mobile terminal - Google Patents

Abstract

The invention discloses a charging device for a mobile terminal, which comprises: an input port; at least two output ports, which are connected to the input port in parallel, and a switch is connected to the output port; a charging circuit, which is connected to the input port and the output port and supply the charge from the power supply device to the mobile terminal, the charging circuit includes: a first detection unit for detecting whether the output port is connected to the mobile terminal; a current detection unit and a control unit for detecting the charging current, which The switching of the switch is controlled according to the detection results of the first detection unit and the current detection unit, so as to realize sequential charging of the output ports. The charging device is used as a charging device for mobile terminals, which can be connected to multiple mobile terminals at the same time, and automatically charge the corresponding mobile terminals in a corresponding sequence, and at the same time adjust the charging sequence of the corresponding mobile terminals by using a switch. The invention also provides a charging method using the charging device.

Description

Charging device and charging method for mobile terminal

technical field

The invention relates to a charging device. More specifically, the present invention relates to a charging device and a charging method for a mobile terminal.

Background technique

With the advancement of society and the development of communication, most families now have a mobile phone or even multiple mobile phones. Every mobile phone is equipped with a charger, and the existing chargers are often only provided with a USB interface for connecting the mobile phone. It leads to the tension of the socket of the power strip, the charger itself and the USB cable. In the prior art, there is a method of using a USB charger to externally connect multiple female ports, but this method also has problems; one is that users need to prepare multiple data cables with USB interfaces, but usually it is inconvenient for everyone to go out. Portable, so don’t think about bringing multiple data cables; Second, when charging different mobile terminals on the same socket at the same time, there may be a certain one that is not fully charged, or cannot be charged, but the other has passed. Finally, parallel charging also has certain risks due to the large charging current required.

Contents of the invention

It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will be described later.

Another object of the present invention is to provide a charging device for mobile terminals, which can connect multiple mobile terminals at the same time, and automatically charge the corresponding mobile terminals in a corresponding order, and at the same time adjust the charging of the corresponding mobile terminals by using a switch order.

In order to achieve these objects and other advantages according to the present invention, a charging device for a mobile terminal is provided comprising:

an input port;

at least two output ports, which are connected to the input port in parallel with each other, and the output port is also connected to a switch;

and a charging circuit that connects the input port and the output port and supplies electric charges from a power supply device to the mobile terminal, the charging circuit comprising:

A first detection unit for detecting whether the output port is connected to a mobile terminal;

A current detection unit for detecting charging current;

and a control unit, which controls switching of the switch according to the detection results of the first detection unit and the current detection unit, so as to realize sequential charging of the output ports.

Preferably, the charging circuit also includes:

a transfer switch, which is arranged on the charging circuit;

A second detection unit, which detects the on-off of the transfer switch and sends the detection result to the control unit, and the control unit controls the switching sequence of the switches of the output port according to the on-off of the transfer switch.

Preferably, the charging device for a mobile terminal further includes: a display device, which is arranged on the charging circuit, and the display device includes:

At least two indicator lights, which are set corresponding to the output port, are used to display the channel state of the switch of the output port;

And a display screen, which is arranged on the charging circuit and displays the charging current of the output port currently in the charging state.

Preferably, the charging device for a mobile terminal further includes: a casing, the casing includes:

A top plate, on which is provided a position for accommodating the display screen and holding the display screen, and the indicator light is also set on the top plate;

and an inner space surrounded by a top plate, a bottom plate and side walls, the first detection unit, the current detection unit, the control unit and the second detection unit are all housed in the inner space.

Preferably, the charging circuit further includes a charging circuit connected between the output port and the input port, and both the output port and the input port are USB interfaces.

Preferably, a button is further arranged on the top surface of the housing, and the button controls the on-off of the transfer switch.

Preferably, the control unit includes an analog-to-digital conversion module and a power management module.

Another object of the present invention is to provide a charging method using the charging device for a mobile terminal, which includes the following steps:

Step 1, detecting whether the initial output port is inserted into the mobile terminal, if yes, proceed to step 2, otherwise proceed to step 5;

Step 2, the control unit turns on the switch of the output port and turns on the indicator light corresponding to the output port;

Step 3, the current detection unit monitors the charging current and displays the current charging current on the display device;

Step 4, when the charging current is less than 10mA, cut off the switch of the output port, and the output port ends charging;

Step five, detect whether the next output port is inserted into the mobile terminal; if yes, proceed to step two, otherwise proceed to step six;

Step 6: Detect whether the termination output port is plugged into the mobile terminal, if yes, proceed to Step 2, otherwise end charging.

Preferably, the charging method further includes starting the transfer switch to switch the charging sequence of the output port, specifically including: detecting the action of the button, and recording the pressing time as T1, and the lifting of the button The starting time is T2,

When the value of T2-T1 is less than the preset threshold, only the indicator light of the corresponding output port is turned on;

When the value of T2-T1 is greater than the preset threshold, it is detected whether the current output port is inserted into the mobile terminal, and if so, the switch is connected for charging; otherwise, the switch of the initial output port is turned on for charging.

Preferably, the threshold is 1-3ms.

The present invention at least includes the following beneficial effects: the charging device of the present invention is connected to multiple output ports on one input port, and can simultaneously connect multiple mobile terminals and charge the multiple mobile terminals sequentially. A conversion switch is set on the charging device, and the operator can charge multiple mobile terminals through multiple output ports pollingly according to the number of times the button is pressed, or select one of the output ports to charge the mobile terminal according to his own needs. .

Other advantages, objectives and features of the present invention will partly be embodied through the following descriptions, and partly will be understood by those skilled in the art through the study and practice of the present invention.

Description of drawings

FIG. 1 is a schematic structural diagram of a charging device for a mobile terminal according to one embodiment of the present invention;

Fig. 2 is a schematic block diagram of the structure of a charging device for a mobile terminal according to one embodiment of the present invention;

Fig. 3 is a schematic flow chart of the charging method according to one embodiment of the present invention;

FIG. 4 is a schematic flowchart of a charging method according to one embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

As shown in Figures 1 and 2, the present invention provides a charging device for a mobile terminal, including: an input port 100, the input port 100 is used to connect to a power supply device; the power supply device is, for example, a charger or Computers and other equipment.

At least two output ports 200, which are connected to the input port 100 in parallel, and the output port 200 is also connected to a switch 201; the output port 200 is, for example, three, respectively A port, B port and C port; The output ports 200 are connected to the input ports 100 in parallel with each other through data lines. The A port, the B port and the C port are respectively connected with switches K1, K2 and K3, and the switches K1, K2 and K3 are used to control the on-off of the A port, the B port and the C port.

And the charging circuit 300, which connects the input port 100 and the output port 200 and supplies the charge from the power supply device to the mobile terminal, the charging circuit 300 includes:

A first detection unit (not shown in the figure) for detecting whether the output port is connected to a mobile terminal;

A current detection unit (not shown in the figure) for detecting the charging current; when the current detection unit detects that the current charging current is less than 10mA, it switches to the next output port for charging.

And a control unit 301 , which controls switching of the switches K1 , K2 and K3 according to the detection results of the first detection unit and the current detection unit, so as to implement sequential charging of the output port 200 . The output port, such as A port, B port and C port, can be inserted into the mobile terminal to be charged at the same time, thus, only one input port 100 can be used to connect multiple mobile terminals at the same time. The function of automatically charging multiple mobile terminals in sequence. When the current detection unit detects the charging current in real time, when the charging current is less than 10mA, it will automatically switch to the next output port to charge the next mobile terminal or end the work. As a result, charging socket resources are in short supply, and when there are many mobile phones waiting to be charged at the same time, the user only needs to directly plug all the mobile phones to be charged into the output port 200, and does not need to always pay attention to when the mobile phones to be charged are fully charged. , when to replace the next mobile phone. At the same time, when the charging device detects that the charging current is less than 10mA, it will automatically end the charging, so there will be no overshoot phenomenon.

In one of the embodiments, as shown in Figure 1 and Figure 2, the charging circuit 300 further includes:

The transfer switch 302 is arranged on the charging circuit 300 ; the transfer switch 302 such as the switch K4 is used to control the charging sequence of the output port 200 by turning it on and off. The transfer switch 302 is connected to the microprocessor of the control unit 300 through a universal serial interface, for example.

The second detection unit (not shown in the figure), which detects the on-off of the transfer switch 302 and sends the detection result to the control unit 301, and the control unit 301 controls the on-off of the transfer switch 302 according to the The switching sequence of the switches K1 , K2 and K3 of the output port 200 is described above. Every time the transfer switch 302 is turned on and off, the control unit 301 sequentially controls the on and off of the switches K1 , K2 and K3 in a certain order. For example, the transfer switch 302 is turned on and off once, the switch K1 is connected, K2 and K3 are disconnected; the transfer switch 302 is turned on and off for the second time, the switch K2 is connected, K1 and K3 are disconnected; the transfer switch 302 The third time of on-off, the switch K3 is connected, and K1 and K2 are disconnected; thus, the operator selects one of the three output ports 200 for charging.

In one of the embodiments, as shown in FIG. 1 and FIG. 2, the charging device for a mobile terminal further includes: a display device 400, which is arranged on the charging circuit 300, and the display device 400 includes:

At least two indicator lights 401, which are set corresponding to the output port 200, are used to display the channel status of the switch 201 of the output port 200;

And a display screen 402 , which is arranged on the charging circuit 300 and displays the charging current of the output port 200 which is currently in a charging state. The indicator lights 401 are, for example, 3, which are set corresponding to the A port, the B port and the C port, and are used to display the on-off state of the switch K1, K2 or K3; when the indicator light corresponding to the A port is on, it indicates that the switch K1 is in the In the connected state, when a mobile terminal is plugged into the A port, the mobile terminal can be charged directly. The display screen 402 is used to display the charging current in the current charging circuit, and is used to remind the operator of the charging status of the current mobile terminal, especially when the charging current displayed on the display screen is less than 10mA, the operator can easily know the current mobile terminal. The terminal is already filled to avoid overshoot.

In one of the embodiments, as shown in FIG. 1, the charging device for a mobile terminal further includes: a casing, and the casing includes:

The top board 501 is provided with accommodating holes, the display screen 402 is installed on the top board 501 through the accommodating holes, and the indicator light 401 is also arranged on the top board 501 .

and an internal space (not shown in the figure) surrounded by a top plate, a bottom plate and a side wall, the first detection unit, the current detection unit, the control unit and the second detection unit are all accommodated in the inside the interior space. The charging circuit 300 is accommodated in the casing, one is easy to carry, and the other is protecting the charging circuit.

In one of the embodiments, as shown in FIG. 1 and FIG. 2, the charging circuit further includes a charging circuit 502 connected between the output port 200 and the input port 100, and the output port 200 and the The input ports 100 are all USB interfaces. For example, one end of the charging line 502 is connected to the input port 100 , and the other end is connected to three parallel output ports 200 ; the housing is connected to the charging line 502 in series.

In one embodiment, as shown in FIG. 1 and FIG. 2 , a button 503 is provided on the top surface of the housing, and the button 502 controls the switch 302 to be turned on or off. The operator controls the on-off of the transfer switch 302 by pressing or lifting the button 503, which is more convenient to operate.

In one embodiment, as shown in FIG. 1 and FIG. 2 , the control unit 300 includes an analog-to-digital conversion module 303 and a power management module 304 . The analog-to-digital conversion module 303 is used to display the current of the charging circuit on the display screen 402 in digital form, and the power management module 304 is used to control the current and voltage of the charging device to keep stable.

Another object of the present invention is to provide a charging method using the charging device for a mobile terminal, which includes the following steps:

Step 1, detecting whether the initial output port such as port A is inserted into the mobile terminal, if so, proceed to step 2, otherwise proceed to step 5;

Step 2, the control unit 300 turns on the switch of the output port 200 and turns on the indicator light 401 corresponding to the output port 200;

Step 3, the current detection unit monitors the charging current and displays the current charging current on the display device such as the display screen 402;

Step 4, when the charging current is less than 10mA, cut off the switch of the output port 200, and the output port 200-ends charging;

Step 5, detect whether the next output port such as port B is inserted into the mobile terminal; if yes, proceed to step 2, otherwise proceed to step 6;

Step 6: Detect whether the termination output port such as the C port is plugged into the mobile terminal, if yes, proceed to step 2, otherwise end charging.

In one of the embodiments, as shown in Figure 3, when the charging device starts to work, first check from port A to port C to see which port is inserted into the mobile terminal (P=A); if A ( B, C) plugged in, turn on the switch KP(A) for charging at port A; and light up the LED corresponding to port A; at the same time, read the result of the analog-to-digital conversion module and display the current charging current on the display; cycle to A port charging until the charging current undergoes constant current charging, constant voltage charging, and finally until the charging current is less than 10mA; then check whether there is a mobile terminal plugged into the next port, if so, continue charging until the cycle is convenient from all A ports to C ports until.

In one embodiment, as shown in FIG. 4 , the charging method further includes starting the transfer switch 302 to switch the charging sequence of the output port 200 such as the A port, the B port, and the C port, specifically including: detecting The action of the button 503 is recorded as T1 when the button is pressed, and T2 when the button is lifted.

When the value of T2-T1 is less than the preset threshold, only the indicator light 401 of the corresponding output port is turned on;

When the value of T2-T1 is greater than the preset threshold, it is detected whether the current output port is inserted into the mobile terminal, and if so, the switch is connected for charging; otherwise, the switch of the initial output port such as port A is turned on for charging. Wherein, the threshold is 1-3ms.

As shown in Figure 4, use switch 302 such as switch K4 to change the charging sequence of charging. For example, if we plug A port, B port and C port into the mobile terminal, then by default, charging starts from A port. Until the mobile terminal of port A is fully charged, then flush port B and port C in turn. The function of the button 503 is to change the initial charging port of the charging. In the above case, we can make the charging sequence B->C->A; or C->B->A;

As shown in Figure 4, it is detected whether the button 503 is pressed, that is, the on-off state of the switch K4. If it is pressed, the recording time is T1 (T=T1), and the charging node K is changed to (K+1)%3( A, B, C cycle); if the button 503 is lifted, record the time T2, if (T2-T) is less than the preset threshold, such as 1ms, it is determined that the user is switching, and the LED is lit to prompt the user to select the port currently selected, such as B port, at this time, just light up the corresponding LED; if it is greater than the preset threshold, then detect whether the port such as B port is inserted into the mobile terminal, if inserted, just charge the current port such as B port; Ports such as the A port for charging.

The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations to the charging device of the present invention will be apparent to those skilled in the art.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. a kind of charging unit for mobile terminal, which is characterized in that including：

One input port；

At least two output ports, connect the input port parallel with one another, and the output port is also associated with switching；

Charging circuit connects the input port and the output port and the charge from supply unit is supplied to movement Terminal, the charging circuit include：

For detecting the first detection unit whether output port connects mobile terminal；

For detecting the current detecting unit of charging current；

Control unit controls the switching of the switch according to first detection unit and the testing result of current detecting unit, real The existing output port charges in order；When the charging current of the current detecting unit detection is less than 10mA, the output is cut off The switch of port, the output port terminate to charge.

2. it to be used for the charging unit of mobile terminal as described in claim 1, which is characterized in that the charging circuit further includes：

Change-over switch is arranged on the charging circuit；

Second detection unit detects the break-make of the change-over switch and testing result is sent to described control unit, described Control unit controls the transfer sequence of the switch of the output port according to the break-make of the change-over switch.

3. it to be used for the charging unit of mobile terminal as claimed in claim 2, which is characterized in that further include：Display device is set It puts on the charging circuit, the display device includes：

At least two indicator lights correspond to the output port and set, for showing the channel of the switch of the output port State；

Display screen is arranged on the charging circuit, and display is currently at the charging electricity of the output port of charged state Stream.

4. it to be used for the charging unit of mobile terminal as claimed in claim 3, which is characterized in that further include a housing, the shell Body includes：

Top plate is provided with the position of the accommodating display screen and keeps the display screen, and the indicator light is also disposed at institute It states on top plate；

The inner space surrounded by top plate, bottom plate and side wall, it is the first detection unit, the current detecting unit, described Control unit and the second detection unit are accommodated in the inner space.

5. it to be used for the charging unit of mobile terminal as claimed in claim 4, which is characterized in that the charging circuit further includes company The charging circuit being connected between the output port and the input port, the output port and the input port are USB interface.

6. it to be used for the charging unit of mobile terminal as claimed in claim 5, which is characterized in that also set up in the housing top surface There are a button, the break-make of the change-over switch as described in key control.

7. it to be used for the charging unit of mobile terminal as claimed in claim 6, which is characterized in that described control unit includes mould Number modular converter and power management module.

8. a kind of utilize as described in claim any one of 3-7 for the charging method of the charging unit of mobile terminal, feature It is, includes the following steps：

Whether step 1, detection starting output port are inserted into mobile terminal, are to carry out step 2, otherwise carry out step 5；

Step 2, described control unit open the switch of the output port and open the indicator light corresponding to the output port；

Step 3, the current detecting unit monitor the charging current and the on said display means current charging electricity of display Stream；

Step 4 when the charging current is less than 10mA, cuts off the switch of the output port, which terminates to charge；

Step 5, detects whether next output port is inserted into mobile terminal；It is to carry out step 2, otherwise carries out step 6；

Step 6, detection terminate whether output port is inserted into mobile terminal, are to carry out step 2, otherwise terminate to charge.

9. charging method as claimed in claim 8, which is characterized in that when charging unit is moves described in claim 6 The charging unit of terminal, it is suitable that the charging method further includes the charging that the startup change-over switch switches over the output port Sequence specifically includes：The action of the button is detected, it is recorded and presses the time as T1, the button lifts the time as T2,

When the value of T2-T1 is less than preset threshold value, the indicator light of corresponding output port is only opened；

It when the value of T2-T1 is more than preset threshold value, detects whether current output port is inserted into mobile terminal, is described in then connection Switch charges；Otherwise the switch for opening starting output port charges.

10. charging method as claimed in claim 9, which is characterized in that the threshold value is 1-3ms.